SP³ Hybridization:

In sp³ hybridization, the 2s orbital is mix along with all 3 of the 2p orbitals to provide a set of four sp³ hybrid orbitals. (The number of hybrid orbitals must equivalent the number of original atomic orbitals employed for mixing.) The hybrid orbitals will each comprise similar energy but will be dissimilar in energy from the original atomic orbitals. That energy variation wills reflect the mixing of the particular atomic orbitals. The energy of every hybrid orbital is greater as compared to the original s orbital but less than the original p orbitals.